The number of bacteria in your gastrointestinal tract greatly outnumber the cells in your body; your gut has 100 trillion microorganisms while you have about 10 trillion cells in your body!
What this means is that the microflora in your gut is a powerful and compelling force in your body, one that may influence far more than how well your food gets digested. This living inner ecosystem is becoming a favorite topic among scientists and nutritionists alike, and you may be wise to listen to what the newest research is revealing.
Your Gut Bacteria May Influence How Many Calories You Absorb From Your Food
Researchers from Washington University in St. Louis found that obese people have more of a family of bacteria called firmicutes than lean people. Among normal weight people, bacteria called bacteroidetes were less plentiful. And it appears the bacteria were having a major impact on weight.